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(11)

EP 2 583 064 A1

(12)

(43) Date of publication: 24.04.2013 Bulletin 2013/17 (21) Application number: 11795235.8 (22) Date of filing: 26.05.2011

(51) International Patent Classification (IPC):  G01C 21/36(2006.01) G06F 3/048(2013.01) H04L 29/08(2006.01) G06F 17/30(2006.01) H04W 4/02(2009.01) (86) International application number: PCT/FI2011/050481 (87) International publication number: WO 2011/157888 (22.12.2011 Gazette 2011/51)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 18.06.2010 US 818954 (71) Applicant: Nokia Corporation 02150 Espoo (FI)	(72) Inventors: BALES, Elizabeth San Diego California 92122 (US) SOHN, Timothy, Youngjin Mountain View California 94043 (US) (74) Representative: Jaatinen, Jussi Imari  Nokia Corporation Intellectual Property Department Keilalahdentie 4 02150 Espoo 02150 Espoo (FI)